Read your PDFs in the full screen reader mode - Papers 3 for Mac

Open papers in the Reader

Double-click on a paper in your main library to open it it in
the PDF reader screen. If you select multiple papers and
double-click, all selected papers are opened in separate tabs in
the reader mode where you can easily rearrange the tab order by
drag and drop.

You can also open imported search results directly from the
Search screen by double-clicking or by clicking on the Open button
in the Inspector.

Toggle between PDF, page thumbnail and web page
views

Hide and view inspector to maximise your reader
screen

Click on an arrow on the bottom right corner of the inspector to
hide the inspector.
To show the inspector again, click on the same arrow again and the
inspector is shown again.

Hidden tabs

You can close a PDF that is in the hidden tab by selecting the
tab so that you can see the PDF in the reader and then using the
shift + cmd + W keyboard shortcut to close the tab.

Reopen closed tabs

If you would like to open the same papers in the reader tabs
that you had open last time before you closed Papers, go to File
> 'Reopen Reader Tabs From Last Session'. In addition you can
set Papers to always open tabs from the last session in the
preferences.